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Get rid of some memory leaks identified by Valgrind

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llvm-svn: 25960
This commit is contained in:
Evan Cheng 2006-02-04 06:49:00 +00:00
parent 43978e529e
commit 062ac6e46b
3 changed files with 28 additions and 6 deletions
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23
include/llvm/CodeGen/ScheduleDAG.h
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@ -50,6 +50,8 @@ namespace llvm {
/// Node group - This struct is used to manage flagged node groups. /// Node group - This struct is used to manage flagged node groups.
/// ///
class NodeGroup { class NodeGroup {
public:
NodeGroup *Next;
private: private:
NIVector Members; // Group member nodes NIVector Members; // Group member nodes
NodeInfo *Dominator; // Node with highest latency NodeInfo *Dominator; // Node with highest latency
@ -59,7 +61,7 @@ namespace llvm {
public: public:
// Ctor. // Ctor.
NodeGroup() : Dominator(NULL), Pending(0) {} NodeGroup() : Next(NULL), Dominator(NULL), Pending(0) {}
// Accessors // Accessors
inline void setDominator(NodeInfo *D) { Dominator = D; } inline void setDominator(NodeInfo *D) { Dominator = D; }
@ -256,13 +258,24 @@ namespace llvm {
bool HasGroups; // True if there are any groups bool HasGroups; // True if there are any groups
NodeInfo *Info; // Info for nodes being scheduled NodeInfo *Info; // Info for nodes being scheduled
NIVector Ordering; // Emit ordering of nodes NIVector Ordering; // Emit ordering of nodes
NodeGroup *HeadNG, *TailNG; // Keep track of allocated NodeGroups
ScheduleDAG(SchedHeuristics hstc, SelectionDAG &dag, MachineBasicBlock *bb, ScheduleDAG(SchedHeuristics hstc, SelectionDAG &dag, MachineBasicBlock *bb,
const TargetMachine &tm) const TargetMachine &tm)
: Heuristic(hstc), DAG(dag), BB(bb), TM(tm), : Heuristic(hstc), DAG(dag), BB(bb), TM(tm), NodeCount(0),
NodeCount(0), HasGroups(false), Info(NULL) {} HasGroups(false), Info(NULL), HeadNG(NULL), TailNG(NULL) {}
virtual ~ScheduleDAG() {}; virtual ~ScheduleDAG() {
if (Info)
delete[] Info;
NodeGroup *NG = HeadNG;
while (NG) {
NodeGroup *NextSU = NG->Next;
delete NG;
NG = NextSU;
}
};
/// Run - perform scheduling. /// Run - perform scheduling.
/// ///
@ -329,6 +342,8 @@ namespace llvm {
/// IdentifyGroups - Put flagged nodes into groups. /// IdentifyGroups - Put flagged nodes into groups.
/// ///
void IdentifyGroups(); void IdentifyGroups();
void AddToGroup(NodeInfo *D, NodeInfo *U);
}; };
/// createSimpleDAGScheduler - This creates a simple two pass instruction /// createSimpleDAGScheduler - This creates a simple two pass instruction

10
lib/CodeGen/SelectionDAG/ScheduleDAG.cpp
View File

@ -85,7 +85,7 @@ void ScheduleDAG::IdentifyGroups() {
// No more flags to walk // No more flags to walk
if (Op.getValueType() != MVT::Flag) break; if (Op.getValueType() != MVT::Flag) break;
// Add to node group // Add to node group
NodeGroup::Add(getNI(Op.Val), NI); AddToGroup(getNI(Op.Val), NI);
// Let everyone else know // Let everyone else know
HasGroups = true; HasGroups = true;
} }
@ -479,7 +479,7 @@ static unsigned CountInternalUses(NodeInfo *D, NodeInfo *U) {
//===----------------------------------------------------------------------===// //===----------------------------------------------------------------------===//
/// Add - Adds a definer and user pair to a node group. /// Add - Adds a definer and user pair to a node group.
/// ///
void NodeGroup::Add(NodeInfo *D, NodeInfo *U) { void ScheduleDAG::AddToGroup(NodeInfo *D, NodeInfo *U) {
// Get current groups // Get current groups
NodeGroup *DGroup = D->Group; NodeGroup *DGroup = D->Group;
NodeGroup *UGroup = U->Group; NodeGroup *UGroup = U->Group;
@ -534,5 +534,11 @@ void NodeGroup::Add(NodeInfo *D, NodeInfo *U) {
CountInternalUses(D, U)); CountInternalUses(D, U));
DGroup->group_push_back(D); DGroup->group_push_back(D);
DGroup->group_push_back(U); DGroup->group_push_back(U);
if (HeadNG == NULL)
HeadNG = DGroup;
if (TailNG != NULL)
TailNG->Next = DGroup;
TailNG = DGroup;
} }
} }

1
lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
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@ -1998,4 +1998,5 @@ void SelectionDAGISel::ScheduleAndEmitDAG(SelectionDAG &DAG) {
SL = createBURRListDAGScheduler(DAG, BB); SL = createBURRListDAGScheduler(DAG, BB);
} }
BB = SL->Run(); BB = SL->Run();
delete SL;
} }